Toward ultralucent optical fibers

Akira J. Ikushima; Kazuya Saito; Hiroshi Kakiuchida

doi:10.1117/12.446557

29 October 2001 Toward ultralucent optical fibers

Akira J. Ikushima, Kazuya Saito, Hiroshi Kakiuchida

Proceedings Volume 4594, Design, Fabrication, and Characterization of Photonic Devices II; (2001) https://doi.org/10.1117/12.446557
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

Abstract

From infrared absorption spectra, the present authors elucidated behaviors of the structural relaxation in silica glass doped with various elements, and claim that sub-relaxation process exists besides the main-relaxation given by the viscous flow. Light scattering measurement also suggested the existence of such an additional relaxation channel. The sub- and main-structural relaxations are in general greatly accelerated by a proper dopant. And, the sub-relaxation, which extends below the glass transition temperature, gives a breakthrough to bring silica glass to a more stable structure even below the glass transition temperature. The sub-relaxation then reduces the Rayleigh scattering, a predominant component of the optical loss in the glass. Fluorine and chlorine seem to greatly accelerate the relaxations in silica glass.

Citation Download Citation

Akira J. Ikushima, Kazuya Saito, and Hiroshi Kakiuchida "Toward ultralucent optical fibers", Proc. SPIE 4594, Design, Fabrication, and Characterization of Photonic Devices II, (29 October 2001); https://doi.org/10.1117/12.446557

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